[PATCH v3 4/5] RISC-V: KVM: Split huge pages during KVM_CLEAR_DIRTY_LOG

[Wang Yechao]

Split huge pages on the range specified using KVM_CLEAR_DIRTY_LOG.
And do not split when enabling dirty logging if
KVM_DIRTY_LOG_INITIALLY_SET is set.

Signed-off-by: Wang Yechao <wang.yechao255@xxxxxxxxxx>
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx>
---
 arch/riscv/kvm/mmu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
index 570c0371b85e8..5b92b256ae22c 100644
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
@@ -164,6 +164,9 @@ void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm,
     kvm_riscv_gstage_init(&gstage, kvm);
 
     kvm_riscv_gstage_wp_range(&gstage, start, end);
+
+    if (kvm_dirty_log_manual_protect_and_init_set(kvm))
+        mmu_split_huge_pages(&gstage, start, end);
 }
 
 void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
-- 
2.43.5